Insulating device



FIG. 1 is a top, front, right perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dotted broken lines within the shaded area represent stitching that form part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 